EP2499433A2 - Energy efficient heating installation - Google Patents

Energy efficient heating installation

Info

Publication number
EP2499433A2
EP2499433A2 EP10796108A EP10796108A EP2499433A2 EP 2499433 A2 EP2499433 A2 EP 2499433A2 EP 10796108 A EP10796108 A EP 10796108A EP 10796108 A EP10796108 A EP 10796108A EP 2499433 A2 EP2499433 A2 EP 2499433A2
Authority
EP
European Patent Office
Prior art keywords
heat pump
fan convector
heating
fan
heating unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10796108A
Other languages
German (de)
French (fr)
Inventor
Gary Stanton Webster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smiths Environmental Products Ltd
Original Assignee
Smiths Environmental Products Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smiths Environmental Products Ltd filed Critical Smiths Environmental Products Ltd
Publication of EP2499433A2 publication Critical patent/EP2499433A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • F24D15/04—Other domestic- or space-heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/008—Details related to central heating radiators
    • F24D19/0087—Fan arrangements for forced convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/06—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated
    • F24D5/08—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated with hot air led through radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/12—Hot-air central heating systems; Exhaust gas central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/156—Reducing the quantity of energy consumed; Increasing efficiency
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/254—Room temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/269—Time, e.g. hour or date
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/345—Control of fans, e.g. on-off control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

Definitions

  • This invention relates to an energy efficient heating installation for providing heating to a building, and to an energy efficient fan convector unit for use in such an installation.
  • it relates to an energy efficient heating installation utilising a heat pump in place of a conventional oil- or gas-fired boiler, and fan convector heating units in place of conventional radiators.
  • the present invention seeks to address the above issues by providing an energy efficient, fossil fuel free, domestic heating system which will be well within the financial reach of the average consumer. It is envisaged that the purchasing cost of the domestic heating system of the present invention will be recovered through the cost savings attributable to increased energy efficiency well before the end of the system's life cycle. Indeed, it is envisaged that the purchase cost of the domestic heating system of the present invention will be comparable to the purchase cost of conventional condensing boiler based heating system of similar size or capacity.
  • a further aim of the present invention is to provide an alternative energy based domestic heating system which can be simply installed by a qualified plumber, without the need for the involvement of other tradesmen such as alternative energy specialists or electricians.
  • a heating installation comprising:
  • a heat pump having an internal water coil, and fluid connectors adapted to transfer heated water from said coil to a domestic heating system and to receive cooled water returned therefrom;
  • one or more fan convector heating units each having an electrically driven fan and fluid connectors adapted to receive heated water from the heat pump and to return cooled water to the heat pump;
  • control means in electrical communication with the heat pump and each fan convector heating unit(s), and adapted to activate said one or more electrically driven fans upon receipt of an activating signal from the heat pump.
  • fan convector heating unit as used herein is intended to refer to such a unit, also known as a wall-mounting fan convector or fan-assisted radiator, comprising a heat exchanger fed by the central heating system of a building in which the heating unit is installed, and an electric fan arranged to blow air over the heat exchanger.
  • the control means is preferably further adapted to deactivate said one or more electrically driven fans upon receipt of a deactivating signal from the heat pump.
  • the control means preferably is or comprises a low voltage transformer adapted to operate the fan convector heating unit(s) on a low voltage electricity supply.
  • the low voltage transformer is adapted to provide a 12V electricity supply to the fan convector heating units.
  • the low voltage transformer may preferably be housed within the heat pump itself. As such, the heat pump is adapted effectively to activate and deactivate the fan convector heating unit(s) as required.
  • the heat pump is preferably provided with a timed switch, adapted to generate the activating signal to the control means upon the elapse of a predetermined period of time following activation of the heat pump.
  • the timed switch is further adapted to generate the deactivating signal to the control means upon the elapse of a pre-determined period of time following deactivation of the heat pump.
  • the heat pump may optionally be provided with a thermostatic controller adapted to generate the activating signal to the control means upon the temperature of water in the heat pump coil reaching a pre-determined activation temperature.
  • the thermostatic controller is preferably further adapted to generate the deactivating signal to the control means upon the temperature of water in the heat pump coil falling to a predetermined deactivation temperature.
  • the heat pump is preferably an air source heat pump.
  • the heat pump may alternatively be a ground source heat pump - which are generally more efficient at delivering recovered energy to a building - however, these tend to be more expensive than air source heat pumps and therefore do not lend themselves to meeting the aims of the present invention.
  • the heat pump is preferably an air-to-water heat pump.
  • Such heat pumps are designed to operate at a co-efficient of performance (COP) of approximately 3:1 . This means that for approximately every unit of energy consumed (from the mains electricity supply required to operate the heat pump), the heat pump will deliver 3 units of energy to the building in the form of heat. This level of performance can be maintained even when the ambient temperature is as low as 5°C - the temperature of an average winter's day in the UK.
  • the air source heat pump may additional be connected to one or more auxiliary heat sources, such as solar panels, ground source heat pumps and geothermal energy systems.
  • the heat pump, and each fan convector heating unit are preferably provided with plug and socket electrical connectors adapted to enable connection between said heat pump and one or more fan convector heating units, and between respective fan convector heating units.
  • plug and socket electrical connectors combined with the 12V power supply, makes the installation of the fan convector heating units considerably simpler than the installation of existing fan convector based central heating systems.
  • the plug and socket connectors are used simply to link the heat pump to one fan convector heating unit (usually the closest such unit to the heat pump) and then to link each remaining fan convector heating unit in the system to its adjacent units in a "daisy chain" arrangement.
  • a major advantage of this arrangement is that the installation of the entire system can be carried out by a qualified plumber, without the need for an electrician.
  • the accreditation or certification generally required to perform electrical installations (known as "part P” certification in the UK) is not required for 12V "plug and play” installations as described above.
  • the electrical installation of the system can be carried out without the need for any specialist tools.
  • the plumber carrying out the installation would not be required to have any specialist knowledge of the operation of the heat pump - all that is required for the installation is to run pipe work from the heat pump fluid connectors to the fan convector fluid connectors, in the same way as for a conventional central heating system.
  • the present invention therefore preferably provides a heating installation as hereinbefore described comprising a plurality of fan convector heating units arranged in series, wherein each fan convector heating unit in the series is electrically connected to the adjacent fan convector heating unit in the series by means of plug and socket electrical connectors, and wherein the first fan convector heating unit in the series is electrically connected to the heat pump by means of said plug and socket electrical connectors.
  • the fan convector heating units utilised in the heating installation according to the present invention are preferably slimline, down-draft fan convector heating units.
  • Such slimline units are generally slimmer than a single panel radiator and have a width of substantially 86 mm.
  • the use of down-draft fan convector heating units means that cooler air is drawn in through the top of the unit and warmed air is expelled through the base of the unit.
  • the emission of warmed air from the base of the unit, rather than the top, is considered to be more efficient for heat distribution, since the warmed air gently drifts across the floor of the room, thus eliminating the cold drafts often associated with other heat emitting apparatus.
  • the fan convector heating units utilised in the heating installation of the present invention are designed to be installed in same way as a conventional radiator. In particular, there is no need to remove the cover or casing as is required when installing many existing fan convectors. Instead, the fan convector heating units used in the present invention are each provided with a back hanger. During installation, the back hanger is screwed to a wall of the building, the fan convector heating unit is hung on the back hanger, and the chassis of the fan convector heating unit is then screwed to the wall via fixing points at the bottom of the unit.
  • the fan convector heating units used in the present invention are designed to be activated by the heat pump, via the control means, only when the water circulating in the fluid connectors as been sufficiently heated, the fan convector units do not require a low temperature cut-out (LTC) thermostat, as is generally required in existing fan convector heating units. This means that further cost savings can be achieved in the manufacture of the fan convector units employed in the present invention.
  • LTC low temperature cut-out
  • the heating installation of the present invention preferably further comprises a house thermostat in electrical communication with the heat pump, and adapted to activate said heat pump upon the house temperature falling to a pre-determined activation temperature, and to deactivate the heat pump upon the house temperature reaching a pre-determined deactivation temperature.
  • each fan convector heating unit is preferably further provided with a zone room thermostat adapted to switch said fan convector into an ON mode upon the room temperature falling to a pre-determined activation temperature, and to switch said fan convector into an OFF mode upon the room temperature reaching a pre-determined deactivation temperature.
  • the units may optionally also be provided with a manual over-ride switch to enable the unit manually to be switched between ON and OFF modes.
  • BSRIA Building Services Research and Information Association
  • the fan convector heating units utilised in the present invention were shown to use 24% less energy to heat a room, compared with conventional radiators of equivalent size. This figure was found to increase to 31 % when used with lower water temperatures. Accordingly, it is recommended that for maximum energy efficiency savings, the heating installation of the present invention should be operated with lower water temperatures (50 °C).
  • the activation of the heat pump will be controlled by the house thermostat and preferably also a time clock. Once activated, the heat pump will typically run for approximately 3 to 5 minutes to heat up the water before the timed switch activates the 12V power supply to the fan convector heating units.
  • the control means may desirably provide the facility to adjust the time period between activation of the heat pump and activation of the 12V power supply to the fan convector heating units. Once the power supply is activated, each fan convector heating unit switched to its ON mode will be energised.
  • the heat pump is deactivated when the house thermostat's preselected deactivation temperature has been reached. This in turn switches off the fan convector heating units by deactivating the 12V power supply.
  • the heat pump (and hence the 12V power supply and the fan convector heating units) will then cycle in the same way as a conventional boiler, according to temperature variation in the house and the house thermostat settings.
  • the heating installation of the present invention may be adapted to include an indirect hot water storage cylinder in fluid connection with the heat pump coil, for the supply of domestic hot water.
  • the heating installation of the present invention is intended to be supplied as a full central heating package, adapted to suit different house sizes.
  • the installation may be supplied with heat pumps of varying power and with any number of fan convector heating units, preferably in the range of from six to twelve.
  • the scope of the present invention extends to include a modified fan convector heating unit for use in a heating installation as hereinbefore described.
  • a fan convector heating unit for use in a heating installation comprising a heat pump and control means as hereinbefore described, said fan convector heating unit comprising:
  • an electrically driven fan arranged to direct air over said heat exchanger; and - fluid connectors adapted to deliver heated water to said heat exchanger from said heat pump and to return cooled water from said heat exchanger to said heat pump;
  • the electrically driven fan is adapted to be activated by said control means upon receipt of an activating signal from said heat pump.
  • Figure 1 shows a diagrammatic representation of a preferred embodiment of heating installation according to a first aspect of the present invention.
  • Figure 2 shows a perspective internal view of a fan convector heating unit according to a second aspect of the present invention, for use in the heating installation of Figure 1 .
  • the heating installation comprises a heat pump 1 1 arranged to drive a series of six fan convector heating units 12, 13, 14, 15, 16, 17, according to a second aspect of the present invention, as will be described in more detail below with reference to Figure 2.
  • the heat pump 1 1 is provided with flow and return fluid connectors 18, 19, in communication with the heat pump's internal coil (not shown) and to which are connected flow and return pipes 21 , 22 adapted, respectively, to deliver heated water from the heat pump 1 1 to each fan convector heating unit 12-17, and to return cooled water from said units 12-17 to the heat pump 1 1 , via like flow and return fluid connectors 23, 24 on each unit 12-17.
  • the heat pump 1 1 and each heating unit 12-17 are also provided with electrical socket connectors 25, each adapted to receive a plug (not visible in Figure 1 ) of an electrical connection cable 26.
  • the electrical connection cables 26 deliver power from a 12V transformer (forming part of control means 27 housed integrally within the heat pump 1 1 ) to the internal fan (not shown) of each fan convector heating unit 12-17.
  • the heat pump 1 1 is connected to the first fan convector heating unit 12 in the series, which is in turn connected to the second heating unit 13, which is in turn connected to the next unit 14, and so on.
  • This arrangement not only enables the heating installation 10 to be installed by a qualified plumber without the need for an electrician or electrical ("part P") certification, but also allows for the system to be easily adapted to include additional heating units if required.
  • the heat pump 1 1 has integral control means 27 incorporated therewithin, comprising a 12V electrical transformer.
  • the control means 27 also includes a timed switch (not shown) adapted to activate the fan convector heating units 12-17 by enabling the 12V power supply thereto upon the elapse of a predetermined period of time following activation of the heat pump 1 1 .
  • a timed switch (not shown) adapted to activate the fan convector heating units 12-17 by enabling the 12V power supply thereto upon the elapse of a predetermined period of time following activation of the heat pump 1 1 .
  • This arrangement negates the need for a low temperature cut-out (LTC) thermostat as is required in existing fan convector heating unit systems.
  • LTC low temperature cut-out
  • Each fan convector heating unit 12-17 may also be provided with a zone/room thermostat (not shown in Figure 1 ) to provide additional independent control for each unit 12-17.
  • fan convector heating unit 12 for use in the heating installation 10 according to the first aspect of the present invention.
  • the fan convector heating unit 12 is shown in Figure 2 with its cover removed in order to view the internal components. Many of the components of the fan convector heating unit 12 have already been discussed with reference to the heating installation 10, and so wherever possible like reference numerals will be used to denote like components. It should be understood that the fan convector heating unit 12 illustrated in Figure 2 may represent any of the sequence of fan convector heating units 12-17 described above with reference to the heating installation 10.
  • the fan convector heating unit 12 is provided with flow and return fluid connectors 23, 24 for fluid communication with the heat pump 1 1 and adjacent like units 13-17.
  • the fan convector heating unit 12 is also provided with an electrical socket connector 25, for electrical connection to the heat pump 1 1 and adjacent like units 13-17.
  • the fan convector heating unit 12 has a heat exchanger 31 in fluid communication with the flow and return fluid connectors 23, 24.
  • An electrically driven fan assembly 32 is arranged to draw cool air in through an air inlet 33 located near the top of the unit 12, and to direct it over the heat exchanger 31 to an air outlet 34 located at the bottom of the unit 12. Warm air is thus expelled from the bottom of the unit 12 creating a "down-draft" effect as hereinbefore described.
  • the electrically driven fan assembly 32 is adapted to be activated and deactivated by control means (not show) upon receipt of an activating or deactivating signal, as appropriate, from the heat pump 1 1 .
  • the unit 12 is further provided with a zone room thermostat 35, to provide additional independent control for the unit 12, as hereinbefore described.
  • the unit 12 also includes a bleed valve 36, to enable bleeding of the unit 12 in the same way as with a conventional radiator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

A heating installation (10) comprises a heat pump (11), one or more fan convector heating units (12-17), and control means (27). The heat pump (11) has an internal water coil, and fluid connectors (18, 19) adapted to transfer heated water from the coil to a domestic heating system, and to receive cooled water returned from the heating system. The fan convector heating units (12-17) each have an electrically driven fan, and fluid connectors (23, 24) adapted to receive heated water from the heat pump (11) and to return cooled water to the heat pump (11). The control means (27) is in electrical communication with the heat pump (11) and each fan convector heating unit (12-17), and is adapted to activate the electrically driven fans upon receipt of an activating signal from the heat pump (11).

Description

Energy Efficient Heating Installation
This invention relates to an energy efficient heating installation for providing heating to a building, and to an energy efficient fan convector unit for use in such an installation. In particular, it relates to an energy efficient heating installation utilising a heat pump in place of a conventional oil- or gas-fired boiler, and fan convector heating units in place of conventional radiators.
As reserves of fossil fuels such as coal, oil and gas begin to deplete and consequently rise in price, the use of alternative energy sources for domestic heating has become more attractive. Combined with this, there is widespread public concern over climate change, which is attributed partly to carbon dioxide emissions from combustion of such fossil fuels. This has led to an increased demand both for alternative energy based domestic heating systems, and for more energy efficient systems as general public awareness of energy supply issues has increased.
However, many of the new generation of energy saving heating systems which have appeared on the market are so highly priced that it would take longer than the operating lifetime of the system for the cost savings attributable to the increased energy efficiency to equal the original purchasing cost. As such, the installation of "green" domestic heating systems has hitherto been beyond the financial reach of many consumers.
Furthermore, alternative energy sources such as heat pumps, solar panels and wind turbines can usually not be simply plugged into existing domestic heating systems in place of the conventional oil- or gas-fired boiler. Therefore, in addition to the obvious cost implications of installing an entirely new domestic heating system, as mentioned above, the installation of many presently available systems often causes considerable disruption to a household. A further consideration is the specialised nature of such technologies, meaning that many systems cannot simply be installed by a general builder or plumber. The installation of many systems require the involvement of more than one type of tradesman, such as plumbers, electricians, builders and specialists in the technology involved, which inevitably leads to further increased costs and usually delays in the installation project.
The present invention seeks to address the above issues by providing an energy efficient, fossil fuel free, domestic heating system which will be well within the financial reach of the average consumer. It is envisaged that the purchasing cost of the domestic heating system of the present invention will be recovered through the cost savings attributable to increased energy efficiency well before the end of the system's life cycle. Indeed, it is envisaged that the purchase cost of the domestic heating system of the present invention will be comparable to the purchase cost of conventional condensing boiler based heating system of similar size or capacity.
A further aim of the present invention is to provide an alternative energy based domestic heating system which can be simply installed by a qualified plumber, without the need for the involvement of other tradesmen such as alternative energy specialists or electricians.
According to a first aspect of the present invention there is provided a heating installation comprising:
- a heat pump, having an internal water coil, and fluid connectors adapted to transfer heated water from said coil to a domestic heating system and to receive cooled water returned therefrom;
- one or more fan convector heating units, each having an electrically driven fan and fluid connectors adapted to receive heated water from the heat pump and to return cooled water to the heat pump;
- control means, in electrical communication with the heat pump and each fan convector heating unit(s), and adapted to activate said one or more electrically driven fans upon receipt of an activating signal from the heat pump.
The term "fan convector heating unit" as used herein is intended to refer to such a unit, also known as a wall-mounting fan convector or fan-assisted radiator, comprising a heat exchanger fed by the central heating system of a building in which the heating unit is installed, and an electric fan arranged to blow air over the heat exchanger.
The control means is preferably further adapted to deactivate said one or more electrically driven fans upon receipt of a deactivating signal from the heat pump.
The control means preferably is or comprises a low voltage transformer adapted to operate the fan convector heating unit(s) on a low voltage electricity supply. Most preferably, the low voltage transformer is adapted to provide a 12V electricity supply to the fan convector heating units. The low voltage transformer may preferably be housed within the heat pump itself. As such, the heat pump is adapted effectively to activate and deactivate the fan convector heating unit(s) as required.
The heat pump is preferably provided with a timed switch, adapted to generate the activating signal to the control means upon the elapse of a predetermined period of time following activation of the heat pump. Most preferably, the timed switch is further adapted to generate the deactivating signal to the control means upon the elapse of a pre-determined period of time following deactivation of the heat pump.
In addition to, or as an alternative to the timed switch, the heat pump may optionally be provided with a thermostatic controller adapted to generate the activating signal to the control means upon the temperature of water in the heat pump coil reaching a pre-determined activation temperature. The thermostatic controller is preferably further adapted to generate the deactivating signal to the control means upon the temperature of water in the heat pump coil falling to a predetermined deactivation temperature.
In order that the present invention may meet its aims of providing a low cost heating installation, the heat pump is preferably an air source heat pump. The heat pump may alternatively be a ground source heat pump - which are generally more efficient at delivering recovered energy to a building - however, these tend to be more expensive than air source heat pumps and therefore do not lend themselves to meeting the aims of the present invention. As will be appreciated by the foregoing discussion, the heat pump is preferably an air-to-water heat pump.
Such heat pumps are designed to operate at a co-efficient of performance (COP) of approximately 3:1 . This means that for approximately every unit of energy consumed (from the mains electricity supply required to operate the heat pump), the heat pump will deliver 3 units of energy to the building in the form of heat. This level of performance can be maintained even when the ambient temperature is as low as 5°C - the temperature of an average winter's day in the UK. For increased performance, the air source heat pump may additional be connected to one or more auxiliary heat sources, such as solar panels, ground source heat pumps and geothermal energy systems. The heat pump, and each fan convector heating unit, are preferably provided with plug and socket electrical connectors adapted to enable connection between said heat pump and one or more fan convector heating units, and between respective fan convector heating units.
The provision of plug and socket electrical connectors, combined with the 12V power supply, makes the installation of the fan convector heating units considerably simpler than the installation of existing fan convector based central heating systems. The plug and socket connectors are used simply to link the heat pump to one fan convector heating unit (usually the closest such unit to the heat pump) and then to link each remaining fan convector heating unit in the system to its adjacent units in a "daisy chain" arrangement.
A major advantage of this arrangement is that the installation of the entire system can be carried out by a qualified plumber, without the need for an electrician. In particular, the accreditation or certification generally required to perform electrical installations (known as "part P" certification in the UK) is not required for 12V "plug and play" installations as described above. Additionally, the electrical installation of the system can be carried out without the need for any specialist tools. It should also be noted that the plumber carrying out the installation would not be required to have any specialist knowledge of the operation of the heat pump - all that is required for the installation is to run pipe work from the heat pump fluid connectors to the fan convector fluid connectors, in the same way as for a conventional central heating system.
The present invention therefore preferably provides a heating installation as hereinbefore described comprising a plurality of fan convector heating units arranged in series, wherein each fan convector heating unit in the series is electrically connected to the adjacent fan convector heating unit in the series by means of plug and socket electrical connectors, and wherein the first fan convector heating unit in the series is electrically connected to the heat pump by means of said plug and socket electrical connectors.
The fan convector heating units utilised in the heating installation according to the present invention are preferably slimline, down-draft fan convector heating units. Such slimline units are generally slimmer than a single panel radiator and have a width of substantially 86 mm. The use of down-draft fan convector heating units means that cooler air is drawn in through the top of the unit and warmed air is expelled through the base of the unit. The emission of warmed air from the base of the unit, rather than the top, is considered to be more efficient for heat distribution, since the warmed air gently drifts across the floor of the room, thus eliminating the cold drafts often associated with other heat emitting apparatus.
As noted above, the fan convector heating units utilised in the heating installation of the present invention are designed to be installed in same way as a conventional radiator. In particular, there is no need to remove the cover or casing as is required when installing many existing fan convectors. Instead, the fan convector heating units used in the present invention are each provided with a back hanger. During installation, the back hanger is screwed to a wall of the building, the fan convector heating unit is hung on the back hanger, and the chassis of the fan convector heating unit is then screwed to the wall via fixing points at the bottom of the unit.
Because the fan convector heating units used in the present invention are designed to be activated by the heat pump, via the control means, only when the water circulating in the fluid connectors as been sufficiently heated, the fan convector units do not require a low temperature cut-out (LTC) thermostat, as is generally required in existing fan convector heating units. This means that further cost savings can be achieved in the manufacture of the fan convector units employed in the present invention.
The heating installation of the present invention preferably further comprises a house thermostat in electrical communication with the heat pump, and adapted to activate said heat pump upon the house temperature falling to a pre-determined activation temperature, and to deactivate the heat pump upon the house temperature reaching a pre-determined deactivation temperature.
Additionally, each fan convector heating unit is preferably further provided with a zone room thermostat adapted to switch said fan convector into an ON mode upon the room temperature falling to a pre-determined activation temperature, and to switch said fan convector into an OFF mode upon the room temperature reaching a pre-determined deactivation temperature. The units may optionally also be provided with a manual over-ride switch to enable the unit manually to be switched between ON and OFF modes. In independent tests carried out by the UK's Building Services Research and Information Association (BSRIA), the fan convector heating units utilised in the present invention were shown to use 24% less energy to heat a room, compared with conventional radiators of equivalent size. This figure was found to increase to 31 % when used with lower water temperatures. Accordingly, it is recommended that for maximum energy efficiency savings, the heating installation of the present invention should be operated with lower water temperatures (50 °C).
In use, the activation of the heat pump will be controlled by the house thermostat and preferably also a time clock. Once activated, the heat pump will typically run for approximately 3 to 5 minutes to heat up the water before the timed switch activates the 12V power supply to the fan convector heating units. The control means may desirably provide the facility to adjust the time period between activation of the heat pump and activation of the 12V power supply to the fan convector heating units. Once the power supply is activated, each fan convector heating unit switched to its ON mode will be energised.
The heat pump is deactivated when the house thermostat's preselected deactivation temperature has been reached. This in turn switches off the fan convector heating units by deactivating the 12V power supply. The heat pump (and hence the 12V power supply and the fan convector heating units) will then cycle in the same way as a conventional boiler, according to temperature variation in the house and the house thermostat settings.
As will be appreciated, the heating installation of the present invention may be adapted to include an indirect hot water storage cylinder in fluid connection with the heat pump coil, for the supply of domestic hot water.
The heating installation of the present invention is intended to be supplied as a full central heating package, adapted to suit different house sizes. Thus the installation may be supplied with heat pumps of varying power and with any number of fan convector heating units, preferably in the range of from six to twelve.
The scope of the present invention extends to include a modified fan convector heating unit for use in a heating installation as hereinbefore described.
Therefore, according to a second aspect of the present invention, there is provided a fan convector heating unit for use in a heating installation comprising a heat pump and control means as hereinbefore described, said fan convector heating unit comprising:
- a heat exchanger;
- an electrically driven fan arranged to direct air over said heat exchanger; and - fluid connectors adapted to deliver heated water to said heat exchanger from said heat pump and to return cooled water from said heat exchanger to said heat pump;
and wherein the electrically driven fan is adapted to be activated by said control means upon receipt of an activating signal from said heat pump.
The preferred features of the fan convector heating unit(s) as discussed above with reference to the heating installation according to the first aspect of the present invention should be construed also to represent preferred features of the fan convector heating unit according to the second aspect of the present invention.
In order that the present invention may be more clearly understood, preferred embodiments thereof will now be described in detail, though only by way of example, with reference to the accompanying drawings in which:
Figure 1 shows a diagrammatic representation of a preferred embodiment of heating installation according to a first aspect of the present invention; and
Figure 2 shows a perspective internal view of a fan convector heating unit according to a second aspect of the present invention, for use in the heating installation of Figure 1 .
Referring first to Figure 1 , there is shown a preferred embodiment of heating installation, generally indicated 10, according to a first aspect the present invention. The heating installation comprises a heat pump 1 1 arranged to drive a series of six fan convector heating units 12, 13, 14, 15, 16, 17, according to a second aspect of the present invention, as will be described in more detail below with reference to Figure 2. The heat pump 1 1 is provided with flow and return fluid connectors 18, 19, in communication with the heat pump's internal coil (not shown) and to which are connected flow and return pipes 21 , 22 adapted, respectively, to deliver heated water from the heat pump 1 1 to each fan convector heating unit 12-17, and to return cooled water from said units 12-17 to the heat pump 1 1 , via like flow and return fluid connectors 23, 24 on each unit 12-17. The heat pump 1 1 and each heating unit 12-17 are also provided with electrical socket connectors 25, each adapted to receive a plug (not visible in Figure 1 ) of an electrical connection cable 26. The electrical connection cables 26 deliver power from a 12V transformer (forming part of control means 27 housed integrally within the heat pump 1 1 ) to the internal fan (not shown) of each fan convector heating unit 12-17. As can be seen in Figure 1 , using this "plug and play" arrangement, the heat pump 1 1 is connected to the first fan convector heating unit 12 in the series, which is in turn connected to the second heating unit 13, which is in turn connected to the next unit 14, and so on. This arrangement not only enables the heating installation 10 to be installed by a qualified plumber without the need for an electrician or electrical ("part P") certification, but also allows for the system to be easily adapted to include additional heating units if required.
As noted above, the heat pump 1 1 has integral control means 27 incorporated therewithin, comprising a 12V electrical transformer. The control means 27 also includes a timed switch (not shown) adapted to activate the fan convector heating units 12-17 by enabling the 12V power supply thereto upon the elapse of a predetermined period of time following activation of the heat pump 1 1 . This ensures that the water in the flow pipes 21 is sufficiently heated by the heat pump 1 1 before the electrical fans of each fan convector heating unit 12-17 are activated, so as to ensure that the fans do not blow cold air into the room. This arrangement negates the need for a low temperature cut-out (LTC) thermostat as is required in existing fan convector heating unit systems.
The activation of the heat pump 1 1 itself is controlled by a programmable house thermostat 28, in the same way as a conventional domestic central heating boiler. Each fan convector heating unit 12-17 may also be provided with a zone/room thermostat (not shown in Figure 1 ) to provide additional independent control for each unit 12-17.
Referring now to Figure 2, there is shown a preferred embodiment of fan convector heating unit 12 according to a second aspect of the present invention, for use in the heating installation 10 according to the first aspect of the present invention. The fan convector heating unit 12 is shown in Figure 2 with its cover removed in order to view the internal components. Many of the components of the fan convector heating unit 12 have already been discussed with reference to the heating installation 10, and so wherever possible like reference numerals will be used to denote like components. It should be understood that the fan convector heating unit 12 illustrated in Figure 2 may represent any of the sequence of fan convector heating units 12-17 described above with reference to the heating installation 10.
As described above with reference to the heating installation 10, the fan convector heating unit 12 is provided with flow and return fluid connectors 23, 24 for fluid communication with the heat pump 1 1 and adjacent like units 13-17. The fan convector heating unit 12 is also provided with an electrical socket connector 25, for electrical connection to the heat pump 1 1 and adjacent like units 13-17.
As can also be seen from Figure 2, the fan convector heating unit 12 has a heat exchanger 31 in fluid communication with the flow and return fluid connectors 23, 24. An electrically driven fan assembly 32 is arranged to draw cool air in through an air inlet 33 located near the top of the unit 12, and to direct it over the heat exchanger 31 to an air outlet 34 located at the bottom of the unit 12. Warm air is thus expelled from the bottom of the unit 12 creating a "down-draft" effect as hereinbefore described.
The electrically driven fan assembly 32 is adapted to be activated and deactivated by control means (not show) upon receipt of an activating or deactivating signal, as appropriate, from the heat pump 1 1 . The unit 12 is further provided with a zone room thermostat 35, to provide additional independent control for the unit 12, as hereinbefore described. The unit 12 also includes a bleed valve 36, to enable bleeding of the unit 12 in the same way as with a conventional radiator.

Claims

Claims
1 . A heating installation comprising:
- a heat pump, having an internal water coil, and fluid connectors adapted to transfer heated water from said coil to a domestic heating system and to receive cooled water returned therefrom;
- one or more fan convector heating units, each having an electrically driven fan and fluid connectors adapted to receive heated water from the heat pump and to return cooled water to the heat pump;
- control means, in electrical communication with the heat pump and each fan convector heating unit(s), and adapted to activate said one or more electrically driven fans upon receipt of an activating signal from the heat pump.
2. A heating installation as claimed in claim 1 , wherein the control means is further adapted to deactivate said one or more electrically driven fans upon receipt of a deactivating signal from the heat pump.
3. A heating installation as claimed in claim 1 or claim 2, wherein the heat pump is provided with a timed switch, adapted to generate the activating signal to the control means upon the elapse of a pre-determined period of time following activation of the heat pump.
4. A heating installation as claimed in claim 3, wherein the timed switch is further adapted to generate the deactivating signal to the control means upon the elapse of a pre-determined period of time following deactivation of the heat pump.
5. A heating installation as claimed in any of the preceding claims, wherein the heat pump is provided with a thermostatic controller adapted to generate the activating signal to the control means upon the temperature of water in the heat pump coil reaching a pre-determined activation temperature.
6. A heating installation as claimed in claim 5, wherein the thermostatic controller is further adapted to generate the deactivating signal to the control means upon the temperature of water in the heat pump coil falling to a pre-determined deactivation temperature.
7. A heating installation as claimed in any of the preceding claims, wherein the heat pump is an air source heat pump.
8. A heating installation as claimed in any of claims 1 to 6, wherein the heat pump is a ground source heat pump.
9. A heating installation as claimed in any of the preceding claims, wherein the control means comprises a low voltage transformer adapted to operate the fan convector heating unit(s) on a low voltage electricity supply.
10. A heating installation as claimed in claim 9, wherein the low voltage transformer is adapted to provide a 12V electricity supply to the fan convector heating units.
1 1 . A heating installation as claimed in claim 10, wherein the heat pump and each fan convector heating unit are provided with plug and socket electrical connectors adapted to enable connection between said heat pump and one or more fan convector heating units, and between respective fan convector heating units.
12. A heating installation as claimed in claim 1 1 , comprising a plurality of fan convector heating units arranged in series, wherein each fan convector heating unit in the series is electrically connected to the adjacent fan convector heating unit in the series by means of said plug and socket electrical connectors, and wherein the first fan convector heating unit in the series is electrically connected to the heat pump by means of said plug and socket electrical connectors.
13. A heating installation as claimed in any of the preceding claims, wherein said one or more fan convector heating units are slimline, down-draft fan convector heating units.
14. A heating installation as claimed in any of the preceding claims, wherein said one or more fan convector heating units do not comprise a low temperature cut-out thermostat.
15. A heating installation as claimed in any of the preceding claims, further comprising a house thermostat in electrical communication with the heat pump, and adapted to activate said heat pump upon the house temperature falling to a predetermined activation temperature, and to deactivate the heat pump upon the house temperature reaching a pre-determined deactivation temperature.
16. A heating installation as claimed in any of the preceding claims, wherein the or each fan convector heating unit is further provided with a zone room thermostat adapted to switch said fan convector into an ON mode upon the room temperature falling to a pre-determined activation temperature, and to switch said fan convector into an OFF mode upon the room temperature reaching a pre-determined deactivation temperature.
17. A heating installation as claimed in any of the preceding claims, comprising any number in the range of from six to twelve fan convector heating units.
18. A heating installation as claimed in any of the preceding claims, further comprising an indirect hot water storage cylinder in fluid connection with the heat pump coil, for the supply of domestic hot water.
19. A fan convector heating unit for use in a heating installation comprising a heat pump and control means, as claimed in any of the preceding claims, said fan convector heating unit comprising:
- a heat exchanger;
- an electrically driven fan arranged to direct air over said heat exchanger; and
- fluid connectors adapted to deliver heated water to said heat exchanger from said heat pump and to return cooled water from said heat exchanger to said heat pump;
and wherein the electrically driven fan is adapted to be activated by said control means upon receipt of an activating signal from said heat pump.
20. A fan convector heating unit as claimed in claim 19, wherein the electrically driven fan is further adapted to be deactivated by said control means upon receipt of a deactivating signal from said heat pump.
21 . A fan convector heating unit as claimed in claim 19 or claim 20, adapted to operate on a low voltage electricity supply.
22. A fan convector heating unit as claimed in claim 21 , adapted to operate on a 12V electricity supply
23. A fan convector heating unit as claimed in any of claims 19 to 22, further comprising plug and socket electrical connectors adapted to enable connection between said fan convector heating unit and said heat pump, and/or between said fan convector heating unit and one or more like fan convector heating units.
24. A fan convector heating unit as claimed in claim 23, adapted for plug-and-play electrical installation, without requiring re-wiring.
25. A fan convector heating unit as claimed in any of claims 19 to 24, wherein said unit is a slimline, down-draft fan convector heating unit.
26. A fan convector heating unit as claimed in claim 25, having a width of no more than substantially 86mm.
27. A fan convector heating unit as claimed in any of claims 19 to 26, wherein said unit does not comprise a low temperature cut-out thermostat.
28. A fan convector heating unit as claimed in any of claims 19 to 27, further comprising a zone room thermostat adapted to switch said unit into an ON mode upon the room temperature falling to a pre-determined activation temperature, and to switch said unit into an OFF mode upon the room temperature reaching a predetermined deactivation temperature.
29. A fan convector heating unit as claimed in any of claims 19 to 28, adapted for plumbing installation without requiring disassembly of said unit.
EP10796108A 2009-11-10 2010-11-10 Energy efficient heating installation Withdrawn EP2499433A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0919636A GB2475243A (en) 2009-11-10 2009-11-10 Heating installation having a heat pump and one or more fan convector heating units
PCT/GB2010/051867 WO2011058350A2 (en) 2009-11-10 2010-11-10 Energy efficient heating installation

Publications (1)

Publication Number Publication Date
EP2499433A2 true EP2499433A2 (en) 2012-09-19

Family

ID=41502130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10796108A Withdrawn EP2499433A2 (en) 2009-11-10 2010-11-10 Energy efficient heating installation

Country Status (3)

Country Link
EP (1) EP2499433A2 (en)
GB (1) GB2475243A (en)
WO (1) WO2011058350A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2483446A (en) 2010-09-07 2012-03-14 Smith S Environmental Products Ltd Sound attenuating housing, particularly for use with a heat pump
GB2493010A (en) 2011-07-21 2013-01-23 Smith S Environmental Products Ltd Fireplace heating installation comprising a heat pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392531A (en) * 1981-10-09 1983-07-12 Ippolito Joe J Earth storage structural energy system and process for constructing a thermal storage well
EP0431491A1 (en) * 1989-12-06 1991-06-12 Kabushiki Kaisha Toshiba Heat pump type heating apparatus and control method thereof
DE4421204C2 (en) * 1994-06-17 1999-12-09 Stiebel Eltron Gmbh & Co Kg Air conditioning for living rooms
FR2750480B1 (en) * 1996-07-01 1998-08-21 Paquot Michel SYSTEM FOR HEATING AND COOLING A PREMISES AND PRODUCING DOMESTIC HOT WATER AND RAW WATER
FR2763672B3 (en) * 1997-05-23 1999-11-19 Michel Dupraz HEAT-PUMP HEATING AND AIR-CONDITIONING SYSTEM COMPRISING AN EXTERNAL AIR EXCHANGER AND AN UNDERGROUND SENSOR
DE202008005825U1 (en) * 2008-03-19 2008-08-14 Allebacker Schulte Gmbh Gebläsekonvektorsystem
GB0910819D0 (en) * 2009-06-23 2009-08-05 Smith S Environmental Products Heating installation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011058350A2 *

Also Published As

Publication number Publication date
GB0919636D0 (en) 2009-12-23
WO2011058350A3 (en) 2012-03-29
WO2011058350A2 (en) 2011-05-19
GB2475243A (en) 2011-05-18

Similar Documents

Publication Publication Date Title
US12163692B1 (en) HVAC apparatus, method, and system
EP4145058B1 (en) Climate control apparatus
CA2562636C (en) System and method for hydronic space heating with electrical power generation
CA3138420C (en) Air heating and potable water system having a water heater and a hydronic air handler
US10690356B2 (en) Enhanced convection, differential temperature managed, hydronic heating appliance
US10976067B2 (en) Exploitation of a photovoltaic system coupled to a joint water boiler-air/air heat pump air conditioning system
US20160034011A1 (en) Residential electric load shifting energy storage system
US6237855B1 (en) Direct current electrical controls for heating systems
CN201964523U (en) Indoor heating device
EP2499433A2 (en) Energy efficient heating installation
US8310096B1 (en) Electrical backup for a gas furnace
CA2914194A1 (en) Integrated renewable energy system
GB2475693A (en) A heat pump cabinet especially for use with small domestic houses or apartments
US20100059599A1 (en) Closed loop heating system
EP1746352B1 (en) Heating system
Toropov Gas-electric hybrid wall-mounted boiler
EP3337000B1 (en) Exploitation of a photovoltaic system coupled to a joint water boiler-air/air heat pump air conditioning system
GB2522423A (en) Radiator fan unit
Glanville et al. Demonstration and Simulation of Gas Heat Pump-Driven Residential Combination Space and Water Heating System Performance
Тухтамишев et al. Electric Boiler Heating System
Ciampi et al. Energy analysis of a building-integrated micro-cogeneration system for a residential application in south Italy
RU2846884C1 (en) Combined heat generator on hydrocarbon fuel and electricity with generation of heat energy by crypto-currency mining and method of its operation
US20120199570A1 (en) Heating system with improved efficiency
CN203132033U (en) Ground heating type refrigerating air conditioner
CN201331137Y (en) Water heater

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120601

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140603